[Checkins] [zopefoundation/zope.sendmail] 676dac: Try latest PyPy versions

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.sendmail
  Commit: 676dac6005d583b9a60d52e2b70c83b74ab7d225
      https://github.com/zopefoundation/zope.sendmail/commit/676dac6005d583b9a60d52e2b70c83b74ab7d225
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-07-31 (Fri, 31 Jul 2020)

  Changed paths:
    M .travis.yml

  Log Message:
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  Try latest PyPy versions

We use them in ZTK but pypy3 fails there relatively often.